单体新风净化系统的研究与设计

发布时间：2018-05-16 00:20

本文选题：新风系统 + 空气净化　；参考：《山东大学》2017年硕士论文

【摘要】：随着我国经济的飞速发展和人民生活水平的提高,人们越来越重视自己居住的生活环境,于是出现了各式各样的空气净化设备。目前,市场上用于净化室内空气的设备主要有新风系统和空气净化器,两种设备净化空气的原理不同,但各有优缺点。本文通过Fluent软件对两种设备独立净化室内空气的气流场进行了仿真研究,结果表明同等通风量的情况下,新风系统净化甲醛的效率更高。另一方面,新风系统能够使空气循环流动于室内外之间,可增加室内的氧气含量,具有空气净化器无法替代的优势。然而,新风系统种类繁多,适用场合也有所不同。本文在总结国内新风产业市场行情之后得出单体新风系统具有巨大的发展潜力,同时在结合我国日益严峻的室外空气污染国情的基础上,将空气净化技术与传统新风系统的通风技术相结合,设计了单体新风净化系统。接着,对于单体新风净化系统的通风口设计,本文提出了四种常见的方案,并使用Fluent软件对相应的四种三维空间的气流场进行了仿真研究,通过对比分析空间多个截面若干时间节点的甲醛浓度分布云图、气流速度云图以及甲醛浓度变化曲线图,最终确定出最佳的设计方案,为单体新风净化系统的进、出风口位置分布设计提供了理论依据。而后,结合当前国内外新风设备发展现状,本着成本低且易操作的原则,确定了系统的总体功能,包括污染气体浓度和温湿度数据采集、空气净化和人机交互三大功能,同时依据功能需求分析,阐述了实现各功能模块的器件选型和电路设计原理,并在此基础上设计了能与之有效结合的控制系统软件。最后,根据实验室现有的实验条件搭建了新风净化控制系统试验台,并对系统进行了初步的测试,结果表明,该系统运行可靠且具有较好的稳定性。本文针对室内甲醛和空气混合气流场所进行的数值模拟仿真研究,对于指导新风系统的合理安装以使其发挥更好的空气净化作用具有一定的理论意义,同时对进行其他种类污染气体的净化仿真研究也具有一定的指导作用。采用模块化的方式所设计的单体新风净化控制系统具有功能相对齐全、成本较低、易安装且易维护以及操作简单等优点,可依据功能需求进行快速有效地裁剪封装,以满足不同用户群体的要求。
[Abstract]:With the rapid development of our economy and the improvement of people's living standard, people pay more and more attention to the living environment of their own, so there are various kinds of air purification equipment. At present, the main equipment used to purify indoor air in the market is fresh air system and air purifier. The two kinds of equipment have different principles of purifying air, but each has its own advantages and disadvantages. In this paper, Fluent software is used to simulate the air flow field of two kinds of equipment to purify indoor air independently. The results show that the efficiency of formaldehyde purification in the fresh air system is higher under the condition of the same ventilation. On the other hand, the fresh air system can make the air circulation flow between the indoor and outdoor, can increase the indoor oxygen content, has the advantage that the air purifier can not replace. However, there are many kinds of fresh air systems, and the applicable situation is different. After summing up the domestic fresh air industry market, this paper concludes that the single fresh air system has great development potential, and on the basis of the increasingly severe outdoor air pollution situation in China, The single fresh air purification system was designed by combining the air purification technology with the ventilation technology of the traditional fresh air system. Then, four common schemes are put forward for the vent design of the single fresh air purification system, and the corresponding three dimensional air flow field is simulated by using Fluent software. By comparing and analyzing the cloud diagram of formaldehyde concentration distribution, the flow velocity cloud diagram and the change curve of formaldehyde concentration of several time nodes in space, the best design scheme is finally determined, which is the advance of the single fresh air purification system. The design of the location distribution of the air outlet provides the theoretical basis. Then, according to the current development situation of domestic and foreign fresh air equipment and the principle of low cost and easy to operate, the overall function of the system is determined, including the three functions of air pollution concentration and temperature and humidity data acquisition, air purification and man-machine interaction. At the same time, according to the analysis of functional requirements, the principle of device selection and circuit design for each functional module is described, and the control system software which can be effectively combined with it is designed. Finally, according to the existing experimental conditions in the laboratory, the test bench of the fresh air purification control system is built, and the system is tested preliminarily. The results show that the system is reliable and has good stability. In this paper, the numerical simulation research on indoor formaldehyde and air mixed airflow sites has certain theoretical significance for guiding the reasonable installation of fresh air system in order to make it play a better role in air purification. At the same time, the simulation study of other kinds of pollution gases is also helpful. The monomeric fresh air purification control system designed by modularization has the advantages of relatively complete function, low cost, easy installation, easy maintenance and simple operation, and can be clipped and encapsulated quickly and effectively according to the functional requirements. To meet the needs of different user groups.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52

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